fix(MK8S-196): mock @mcp-b/* in Jest — ESM browser libs not usable in jsdom

Author: JBWatenbergScality

shell-ui/jest.config.js

@@ -1,13 +1,14 @@
 module.exports = {
 	transformIgnorePatterns: [
-		"/node_modules/(?!vega-lite|@scality|pretty-bytes|uuid|@fortawesome|@mcp-b)",
+		"/node_modules/(?!vega-lite|@scality|pretty-bytes|uuid|@fortawesome)",
 	],
 	setupFilesAfterEnv: ["./src/setupTests.ts"],
 	clearMocks: true,
 	moduleNameMapper: {
 		"\\.(css|less)$": "identity-obj-proxy",
 		"^@fortawesome/free-solid-svg-icons/(.*)\\.js$": "@fortawesome/free-solid-svg-icons/$1",
 		"^@fortawesome/free-regular-svg-icons/(.*)\\.js$": "@fortawesome/free-regular-svg-icons/$1",
+		"^@mcp-b/(.*)$": "<rootDir>/src/__mocks__/@mcp-b.js",
 	},
 	testEnvironment: "jsdom",
 };

shell-ui/src/__mocks__/@mcp-b.js

@@ -0,0 +1,3 @@
+// Jest mock for all @mcp-b/* packages.
+// These are browser-runtime ESM libraries that have no value in jsdom tests.
+module.exports = {};